I/O Scheduler Scheme for User Responsiveness in Mobile Systems


KIPS Transactions on Computer and Communication Systems, Vol. 5, No. 11, pp. 379-384, Nov. 2016
10.3745/KTCCS.2016.5.11.379,   PDF Download:
Keywords: NAND Flash Storage, User Responsiveness, I/O Scheduler, Vertical Optimization
Abstract

NAND flash storage is widely used for computer systems, because of it has faster response time, lower power consumption, and larger capacity per unit area than hard disk. However, currently used I/O scheduler in the operating system is optimized for characteristics of the hard disk. Therefore, the conventional I/O scheduler includes the unnecessary overhead in the case of the NAND flash storage to be applied. Particularly, when the write requests performed intensively, garbage collection is performed intensively. So, it occurs the problem that the processing of the I/O request delay. In this paper, we propose the new I/O scheduler to solve the problem of garbage collection performs intensively, and to optimize for NAND flash storage. In the result of performance evaluation, proposed scheme shows an improvement the user responsiveness by reducing 1% of the average read response time and 78% of the maximum response time


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Cite this article
[IEEE Style]
J. W. Park, J. Y. Yoon and D. Seo, "I/O Scheduler Scheme for User Responsiveness in Mobile Systems," KIPS Transactions on Computer and Communication Systems, vol. 5, no. 11, pp. 379-384, 2016. DOI: 10.3745/KTCCS.2016.5.11.379.

[ACM Style]
Jong Woo Park, Jun Young Yoon, and Dae-Wha Seo. 2016. I/O Scheduler Scheme for User Responsiveness in Mobile Systems. KIPS Transactions on Computer and Communication Systems, 5, 11, (2016), 379-384. DOI: 10.3745/KTCCS.2016.5.11.379.